Home / 3,078.29-4,248.38-1,751.78

Finding the Fourth Proportional to 3,078.29, 4,248.38 and 1,751.78

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Solution

The fourth proportional to 3,078.29, 4,248.38 and 1,751.78 is: 2,417.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.29 : 4,248.38 = 1,751.78 : x
  2. Step 2: Convert to fraction form
    3,078.29/4,248.38 = 1,751.78/x
  3. Step 3: Cross multiply
    3,078.29x = 4,248.38 × 1,751.78
  4. Step 4: Simplify right side
    3,078.29x = 7,442,242.12
  5. Step 5: Solve for x
    x = 7,442,242.12/3,078.29
  6. Step 6: Final answer
    x = 2,417.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.